GB1167582A - Improvements in Electric Synchronous Motor Clocks - Google Patents
Improvements in Electric Synchronous Motor ClocksInfo
- Publication number
- GB1167582A GB1167582A GB03/67A GB1367A GB1167582A GB 1167582 A GB1167582 A GB 1167582A GB 03/67 A GB03/67 A GB 03/67A GB 1367 A GB1367 A GB 1367A GB 1167582 A GB1167582 A GB 1167582A
- Authority
- GB
- United Kingdom
- Prior art keywords
- motor
- jan
- clock
- electric synchronous
- synchronous motor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000001360 synchronised effect Effects 0.000 title abstract 2
- 230000010355 oscillation Effects 0.000 abstract 1
- 230000002093 peripheral effect Effects 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04F—TIME-INTERVAL MEASURING
- G04F5/00—Apparatus for producing preselected time intervals for use as timing standards
- G04F5/04—Apparatus for producing preselected time intervals for use as timing standards using oscillators with electromechanical resonators producing electric oscillations or timing pulses
-
- G—PHYSICS
- G04—HOROLOGY
- G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
- G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
- G04C3/08—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically
- G04C3/10—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically driven by electromagnetic means
- G04C3/101—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically driven by electromagnetic means constructional details
-
- G—PHYSICS
- G04—HOROLOGY
- G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
- G04B17/00—Mechanisms for stabilising frequency
- G04B17/04—Oscillators acting by spring tension
- G04B17/10—Oscillators with torsion strips or springs acting in the same manner as torsion strips, e.g. weight oscillating in a horizontal plane
-
- G—PHYSICS
- G04—HOROLOGY
- G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
- G04B17/00—Mechanisms for stabilising frequency
- G04B17/20—Compensation of mechanisms for stabilising frequency
- G04B17/28—Compensation of mechanisms for stabilising frequency for the effect of imbalance of the weights, e.g. tourbillon
-
- G—PHYSICS
- G04—HOROLOGY
- G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
- G04C15/00—Clocks driven by synchronous motors
-
- G—PHYSICS
- G04—HOROLOGY
- G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
- G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
-
- G—PHYSICS
- G04—HOROLOGY
- G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
- G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
- G04C3/04—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a balance
- G04C3/06—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a balance using electromagnetic coupling between electric power source and balance
- G04C3/065—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a balance using electromagnetic coupling between electric power source and balance the balance controlling gear-train by means of static switches, e.g. transistor circuits
-
- G—PHYSICS
- G04—HOROLOGY
- G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
- G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
- G04C3/14—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means incorporating a stepping motor
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
- Electric Clocks (AREA)
Abstract
1,167,582. Oscillating motors and generators. GENERAL ELECTRIC CO. 2 Jan., 1967 [21 Jan., 1966], No. 13/67. Heading H2A. [Also in Division G3] In a clock having an electric synchronous driving motor, the speed of the motor is controlled by an electromagnetic mechanical oscillator system comprising a magnetized disc 22 secured for oscillation on a torsion wire 9 and polarized at four peripheral points 25 to 28 spaced at 90 degrees, adjacent points being of opposite polarity whereby torque forces exerted on the member 22 by magnetic fields external to the clock tend to cancel each other. The magnetized disc 22 induces signals in coils (not shown) included in an electrical oscillator circuit from which synchronizing signals are supplied to the rotor of the motor.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US52221966A | 1966-01-21 | 1966-01-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1167582A true GB1167582A (en) | 1969-10-15 |
Family
ID=24079971
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB03/67A Expired GB1167582A (en) | 1966-01-21 | 1967-01-02 | Improvements in Electric Synchronous Motor Clocks |
Country Status (4)
Country | Link |
---|---|
US (1) | US3497734A (en) |
CH (2) | CH89167A4 (en) |
FR (1) | FR1508525A (en) |
GB (1) | GB1167582A (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1513633A (en) * | 1975-05-14 | 1978-06-07 | Seiko Koki Kk | Motor assembly |
US4350908A (en) * | 1980-12-04 | 1982-09-21 | Westinghouse Electric Corp. | Cooling system for rotor of a dynamoelectric machine |
EP2703911B1 (en) * | 2012-09-03 | 2018-04-11 | Blancpain SA. | Regulating element for watch |
EP3757682B1 (en) * | 2019-06-26 | 2022-03-09 | The Swatch Group Research and Development Ltd | Timepiece movement comprising a magnetic escapement |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2815477A (en) * | 1952-08-07 | 1957-12-03 | Kelvin & Hughes Ltd | Frequency controlling or indicating devices |
US3161813A (en) * | 1962-07-30 | 1964-12-15 | Gen Electric | Magnetic oscillator controlled motor |
CA758698A (en) * | 1962-07-30 | 1967-05-09 | L. Dewolf George | Electro-mechanical frequency determining system |
-
1967
- 1967-01-02 GB GB03/67A patent/GB1167582A/en not_active Expired
- 1967-01-17 FR FR91437A patent/FR1508525A/en not_active Expired
- 1967-01-20 CH CH89167D patent/CH89167A4/xx unknown
- 1967-01-20 CH CH89167A patent/CH480683A/en not_active IP Right Cessation
-
1968
- 1968-10-09 US US772060A patent/US3497734A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US3497734A (en) | 1970-02-24 |
DE1673743A1 (en) | 1971-01-28 |
DE1673743B2 (en) | 1975-05-28 |
CH480683A (en) | 1969-07-15 |
FR1508525A (en) | 1968-01-05 |
CH89167A4 (en) | 1969-07-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |